Avian malaria Plasmodium relictum in native Hawaiian forest birds: epizootiology and demographic impacts on 'apapane Himatione sanguinea

被引:117
作者
Atkinson, Carter T. [1 ]
Samuel, Michael D. [1 ]
机构
[1] Univ Wisconsin, US Geol Survey, Wisconsin Cooperat Wildlife Res Unit, Madison, WI 53706 USA
关键词
SEASONAL-VARIATION; WILDLIFE DISEASE; BORNE DISEASES; CLIMATE-CHANGE; BLUE TITS; PREVALENCE; POPULATION; INFECTION; AGE; DYNAMICS;
D O I
10.1111/j.1600-048X.2009.04915.x
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
The role of introduced avian malaria Plasmodium relictum in the decline and extinction of native Hawaiian forest birds has become a classic example of the potential effect of invasive diseases on biological diversity of naive populations. However, empirical evidence describing the impact of avian malaria on fitness of Hawai'i's endemic forest birds is limited, making it difficult to determine the importance of disease among the suite of potential limiting factors affecting the distribution and abundance of this threatened avifauna. We combined epidemiological force-of-infection with multistate capture--recapture models to evaluate a 7-year longitudinal study of avian malaria in 'apapane, a relatively common native honeycreeper within mid-elevation Hawaiian forests. We found that malaria transmission was seasonal in this mid-elevation forest; transmission peaked during fall and during some years produced epizootic mortality events. Estimated annual mortality of hatch-year birds typically exceeded 50% and mortality of adults exceeded 25% during epizootics. The substantial impact of avian malaria on this relatively common native species demonstrates the key role this disease has played in the decline and extinction of Hawaiian forest birds.
引用
收藏
页码:357 / 366
页数:10
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